MAT/117 MAT117 MAT 117 WEEK 7 QUIZ

MAT/117 MAT117 MAT 117 WEEK 7 QUIZ


1.
Which of the following conclusions is true about the statement below?
2 x ⁢ =   x
•	
The statement is never true.
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The statement is true when x is negative.
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The statement is always true.
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The statement is true when x=0.
2.
Solve for xx in the equation x2 - 8x - 9 = 0.
•	 
{-1, -9}
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{1, -9}
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{-1, 9}
•	  
{1, 9}
3.
Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -9x2 + 6x + 3.
•	 
{-3.00, 2.00}
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{-9, 6}
•	 
{-0.67, -0.33}
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{-0.33, 1.00}
4.
Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -7x2 + 3x + 7.
•	 
{1.24, -0.81}
•	 
{-7, 3}
•	 
{-0.43, -1.00}
•	 
{-1.00, 0.43}
5.
Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -3x2 + 2x + 2.
•	 
{-0.55, 1.22}
•	 
{-3, 2}
•	 
{-0.67, -0.67}
•	  
{-1.50, 1.00}
6.
Solve for x in the equation x2 - 12x + 32 = 0.
•	 
{4, 8}
•	 
{-4, 8}
•	  
{4, -8}
•	  
{-4, -8}



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